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10-05-2022 10:46 AM - edited 10-05-2022 10:56 AM
I have a HP Z820 workstation with a 1125W PSU.
It has 2 SSDs and a mechanical HDD.
I recently bought an NVidia Tesla K80 GPU compute card, and an 6-to-8 pin power supply adapter to connect it to the auxiliary internal power supply plugs (which are all 6-pins). See the attached photo to have a clear idea of the setup.
I followed the steps depicted in this doc: http://h10032.www1.hp.com/ctg/Manual/c01816031.pdf
Nevertheless, when I turn the workstation on, the power led turns red and flashes 4 times, which -according to the manual - means a PSU overload. What am I doing wrong?
The manual says that the 1125W PSU supports up to 2 300W cards - the K80 is one, I don't have others. Why an overload then?
10-13-2022 01:11 AM - edited 10-13-2022 01:21 AM
Welcome to our HP User Forum!
Your Nvidia Tesla K80 GPU requires one PCIe 8-pin power supply cable according to NVIDIA Tesla K80 Specs | TechPowerUp GPU Database, and this card has a max power draw rated at 300 watt.
Please be reminded that a single 6-pin PCIe power connector can provide up to 75 watt, whereas a PCIe 8-pin power connector can provide up to 150 watt -which is what your GPU requires.
First of all, I want to make sure you are using a dual PCIe 6-pin female to a single PCIe 8-pin male GPU power adapter cable to adequately power your graphics card (the 6-pin PCIe power connectors should preferably be plugged into separate PSU power banks), such as this example: Amazon.com: BLUEXIN Dual 6-Pin Female to 8-Pin Male GPU Power Adapter Cable 0.65ft/20cm : Electronic.... If I misunderstood your adapter cable setup -you did use the adapter cable I described, I do apologize.
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